Paving apparatus



R. D. BAKER;

PAVING APPARATUS. APPLICATON FILED APR. 6. 1914 -SHEET I.

Patentedseptul, 1921.

k' 3 SHEETS lol R. D. BAKER.

PAVING APPARATUS.

APPLICATION FILED APR. 6, 1914.

, Patented Spt. 13, 1921.

LSQOA'Y&

3 SHEETS-SHEET 2.

III

R. D. BAKER.

PAVING A-PPARATUS.

APPLlCATlON FILED APR. 6, 1914.

1,390A79., PatentedSept. 13, 1921.

3 SHEETS-SHEET 3.

55 i g m .s de o si e f the me and having nem.

To all 'whom it may concem:

Be it known that I, ROBERT Di. BAKER, a citizen of the United States sidin at Detroit, in the county of Wayne and tate of Michigan,"have invented certan new and useful Improvements in Paving 'Ap aratus, of which the following is a speccation, reference being had theren to the accompanying drawings.

My invention ratus and more particularly to an apparatus designed to be employed'in the forming of concrete or like paving. The invention has among the objects thereof to provide a device by which the leveling of the face or top surface of the paving may be easily and properly accomplished; to provide a structure which will properly finish' or surface the face of the pavement; to provide a device by which the leveling` and the surfacing of the pavement may be accomplished in a single operation; and further to provide'a pavement-surfacng apparatus that may' be readily adapted to pavements of various c'rowns. Other objects of the invention will' more fully hereinafter appear.

gclaima The invention resides in the novel construction, arrangementand combinations of the various parts as hereinafter set forth and 'as particularly pointed out in the In the drawings,-

Figure 1 is a top plan view of the device embodying the invention;

Fig. 2 isa side elevation on a reduced scale, showing the apparatus in operative relation to a road;

Fig. 3 is an enlarged end elevation; Figs. 4 and 5 are enlarged sections,on the lnes w--w and yrespectively of and 7 of the surfacing members; and

Figs. 8 and 9 show certain' details of con# struction. y

In the laying of paving formed from concrete or like material, it is necessary to properly level the concrete so as to give the pavement the desired crown, and also 'it is very desirable to surface or properly finish the avement so that the 'latter will be smooth. Vith themethods now in general use, the concrete-after it has been pom-ed' upon the bed-is leveled and crowned by means of a comparatively narrow striker bar extendon mmm, MICHIGAN. l 5 I Me n. a.

specifioation of Lette-s Patent.

of America, rei relates to paving appa- 'pressure also illustrate the adjustablity V mema Sept. s, 1921.`

Application filed s u G, 191%. Serial No. 830301.

the bottom face thereof shaped to give the reper crown to the pavement. This striker ar s actuated by hand, and afte; it has been drawnacross the face of the pavement, the letter is surfaced by means of handfioats. With my improved structure means is provided for crowning the pavement; which is ada ted to exert a pressure upon the face of t e pavement during crownng, so as to insure a unifonn leveling throughout the entire width of the pavement.` The produces a compression resulting in a -harder, and therefore a better face for the pavement. However, not only have I provided an apparatus for properly crowning the pavement, but I have devised a structure which-duringthe crowning operation-surfaces the face of the pavement by moving across the face of the pavement and in slding contact therewith, a fiat surface or surfaces. In the preferred form of the invention the surfacing means is emloyed in conjunction *with the means for eveling or crowning the pavement, though I do not consider the invention 'limited to the employment of the leveling and surfacing means in combination.

Referring to the one embodiment of my invention shown in the drawings, A designates a frame, herein shown as composed of spaced channel members B and C.' Ar

ranged upon the frame for reciprocation M longtudinally thereof are one or more sur-' the strips H abut so as to form a' continuous surface laterally of the reciprocatin g members; K are a' plurality of'hanger frames spaced longitudinally of the frame A and having the sides L thereof Secured to the members'B and C. Preferably the sides L .are attached to the channel members so as to be 'vertically adjustable, the attachment be-f ing'heren shown as composed of a bolt M which engages a' vertical L. Thus byloosening the bolt M the hangers may be vertically adjusted-as' desiiedv slot N in the sides iEuch of the hengers is provided with u rod or sheft 0 that extends through longitudnul slots i? in the -ecip-ocuting members. These slots u re preferubl y provided with a nottllc lining Q of a width to nicey receive the rollers lt upon the shutt O. e s shown, the body portion I of the reciprocating membc's is of lesser width then theplates H, :ud in order to hold the body portons of the recip'ocating members in proper spaced relition, the portions I of the nd acent members are sepreted by spncers S upon the shaft O while spacers T are mrrenged upon the shar-*t o intermediate the sides L and the members D and D At suitabie intervcls the upper edges oflthe body portions I are held in spaeed rel ation by? neled upon shafts b whic cross bars c that are attached to theframe. Also suitable guide rollers d are provided for the members D and D.

- While the members D to D inclusive muy be uctuutod :s desired, I find' it advantageous to reciprocnte clternate members in op- "posite directions, since ths not only effects :t better sur'faeing', but equalizes the thrusts against the supports. Thiis, the thrust czuscd by part of the members moving in' one direction, is offset by other members moving in the opposite direction. Asshown, U is u crtnh shaft journaled in b'earings V that are cttached to the side's of the frsme A. W are pitmens connected to the cranks X on the shaft U, and Y are yokes attached to alternate reciprocatin members and to which the outer ends o the pitmens are fus-- tened. One of the cranks is preferebly urmn'cd at substnntiully 180 in re'ation to the other crank and, therefore, during the rotaition of the shnft U the alternate members of the series willbe moved in opposite directions. i I

The crank shcft U maybe driven in my suitable manner, but I prefercbly arrange upon the frumeA u suitable motor such us the explosion engine A', which through the gearttrain B' is connected to the shaft U. At the forward edge of the frame A is ar'anged an outwardly and upwardly-extending defiector C' illustrated hei-ein as in the form of u metal strip Secured to the forward 'edge of the strip H thut is attnched to the member D. The member C' forms u deflector and prevents the plastic material C from passing over the strips H.

The surface D* formed bythe bottom faces of the :butting strips H is made of substantinlly the .desired contour for the crown of the road, and while the proper contour of this surface may be effected in various ways, I have devised a novel errengement of' parts whereby the eppcratus may be recdily adjusted st :s to ;give the surface D any predetermined crown within, of course, certain limits. The veriation in the crowning of rollers a jourare carred by' met ere 'ouds, however, is not ver great. Thus the pivotally engage apertures c' in the upe ends of thebers F'. The opposite three end of the bolt passes through an eperture in e block e' that is ivoted between the upper ends of the bars The projecting end I' of the bolt is provided with adjusting nuts J' J arrenged upon oposite sides o'f-the block e' and the ends o the sections abut adjacent the bottom but diverge from' the bottom. Each of the strips H is connected to the body portion I by e plurality of longitudinally spaccd bolts e, but es will be noted upon reference to Figs. 6 and 7 the strip H is not :ittached to the body portion in immediate proximity to thecnds of edjecent sections but the bolts e ure speeed c consider-i or substentially parallel with the portion of the strip H directly therebeneuth so as to better guide the reciprocetory members inan :tre during the longitu'dinl movement tl'iereof. ,By the structure just described it will be rc idily seenthet by propetly udjusting the hangers I( vcrticullv and :rdjustingz the connection between adjucent sections of the reciprocnvting' members, the: crowning surface D* of the appcrut-us may be varied to* u consider-able degree. V

In the operation' of the structure so far described, after the cohcrete or like material hes bcen poured upon the need-bed in the sml nuuner. the whcels F of the appiratus me arrmged upon the crbs and the device free to movegto &limited extent,

suitably propelled longitudinally of the I front o proper height to During movement of the face of the road.

i device longitudinally of the road the concrete at the face of the road willbe compressed, and since the surface D is comparatively wide, the concrete is prevented from flowing down underneath the strips H; As before stated, preferabl the surface D is arranged to slant sli tly u ward toward the front of the mac ine. his may be accomplished in any suitable manner as` by adjustn the rear wheels upon their sup orts. By e ecting the proper vertical a jstment of the rear wheels any desired compression Ina be obtained. As shown, each of the whee s F is carred by arms pivotally connected at z to a bracket j that is secured to the 'channel side member of the frame. The bracket j is provided with a vertical series of apertures k with which the detachably .engage. S idably engaging a slot Zin the bracket is a bolt m that serves to clamp the arms k to the sides of the bracket j in the dierent ositions of ad'stment of the arms. o is a olt havin a t readed enga ement with a hearing p n the bracket j an serving to assist in holdin .the bolt m in its adjusted position. Thus y adjusting the bolt 0 and arms, the position of the arms may be varied as desired.

It is advantageous in transferring the apparatus from one point of the road to another, and particularly in drawing the machine back over the portion of the road that has been surfaced, to provide means for raising the rear end of the surfacing members out of'engagement with the 'face of the road. In order to ermit-this to -be readily accomplished, each of the rear wheels is journaled upon a shaft g having eccentrics` 1' that engage bearings .9 in the arms h. One end of the shaft q projects beyond one of the arms, and to this projecting end t is attached a lever u. Normally the parte just described are in 'the position shown in full Iines in Fig. 3. -When it is desired to raise the apparatus the lever u is moved to the position shown in dotted lines in Fig. 3.

Preferably the surfacing apparatus is propelled forwardly by the engine A'. Thus A is a shaft driven from the engine crank shaft through the' sprocket chain B' and is' provided at its outer end with a worm C that engages a worm-wheel D' fixed to a shaft E?. This shaft is journaled in suitable bearings F at .the front of the frame A, and arranged upon the shaft E ad'a'- cep? epposite nde 't emi .e a dmms ular structure illustrated, but consi ivot k is adapted to 'by si 1 Extendin from these drums to stakes or other anc ors H arranged a suitable dis tance in advance of the machine. are cables I. The worm drive will rovide a suitable step-down train for prope ling the machine forward at a com aratively slow rate of speed. However, t e speed may be varied as desired. i

' While I 'have shown ahd described the referred form of my invention I do not esire to 'limit my protection to the &partie r the invention to be of sumcient scope to embody" various modifications thereot: Also my improved device 'may be used in connection wth pavng other than paving 'for roads."

What I 'claim as my nventon isz- 1 In a paving apparatus, the combina- V tion wth a frame adapted to' span a road bed, a surfacing member 'for use with. plastic material mounted upon the frame for movement transversely of the road' bed, means for adjusting member vertically to vary its relation to the road bed, and frame for actuating said member. V

2. In a pavng` ap arats,-the combinetion with a frame, bed, of 'a surfacing member for usef with plastic material etending transversely of the :trame and having a contour conforming substantially with the finished contour of the pavement, and means mounted up'n the frame for reciprocating said member transversely of the road be 3. In a aving apparatus, a framc, means for propel ing the frame, a pluralityof sur facing members arrangedin close proximity means mounted upon the a' apted to span arcadthe relation of said reciprocation, guides for controlling the movement of said members, and means for y simultaneously actuating one'of said mem. bars in one irection and another of said members ,in the opposite direction transversely of the direction of travel of the frame.

4. n a paving apparatus, a fram, a plurality of surfacing members mounted side do upon said frame in close'proximity to one another for reciprooation, guides for controlling the movement of said members,

and means for .simultaneously actuating alternate members in opposite directions' 5. In a aving apparatus, a frame, rality 'of e ongated parallel surfacing. membersarranged in close proximity to one ana plui other extending longitudinally of the frame from 'side to ,side thereof., a pluralitv of guides spaced longitdinally of the frame and engaging said surfacing members, and

means for reciprcating the surfacing mem- I bers1ongitudinally.

In a pavingapparatus, a frame, a plurality of parallel .surfacing members extending' longitudinally of the fr'ame, longiticomparatively flat and dinal Slots in said members, means carried b?! the frame and extend-ing through said s ots for guiding the movement of said members, and means for reciprocating said members.

7. In a paving apparatus, a frame, a plurality of reciprocatng surfacing members extending longtudinaily of the frame and arranged in close proximity to one another, the surfacing faces of said members being :rranged to extend continuously from sid'e to side and front to back of the frame, and means for reciprocating said members.

8. In a paving apparatus, a frame, and a reciprocatmg surfacing member mounted upon said frame for movement and having an arched surfacing face variable in radius.

9. In a pavin apparatus, a frame', and an arched surfacng member mounted upon said frame for movement, means for varying the curvature of the surfacing member, and means for guiding said surfacing member.

10. In a paving apparatus, a frame, an adju'stable surfacing member mounted upon said frame for reciprocatory -movement, means for ad 'usting said memberto give a predetermined crown to the surfacing face of said member, and adjustable guiding means for said surfacing member.

11. In a paving apparatus, a surfacing means means for varyn the crown of said surfacng means, means or imparting movement to said surfacing means, and adjustable means for guiding the' movement` of said surfacing means.

12. In a paving,` apparatus, a frame, a plurality of surfacing members mounted upon said frame for reciprocation, means for adjusting said surfacng members to vary the crown thereof, and means for reciprocating said members.

13. In a paving apparatus, a frame, a plurality of surfacing members arranged in close proximity to one another mounted upon said frame and means for reciprocating said members, said paving members being providcd with comparatively fiat faces forming a comparatively wide fiat surface, and sad surface having a contour substantially that desired for the crown of the pavement, said surfacing members being adapted to exert a pressure upon the face of the pavement.

14:. In a paving apparatus, a plurality of eiongated composite paraliel members, a frame supporting the same, the components of each member being adjustable in an angalar relation to each other, and a surfacng strip Secured to the bottom of each composte member, and extending from end to end thereof.

15. In a paving apparatus,

the

components being each intermediately supported and respectvely tiltableendwise, means for ad ustng each two adjacent components of each member in various angular relations with each other, and a surfacing strip Secured to the bottom of each composte member and extending from end to end thereof.

16. In a paving apparatus, the combination with two substantially alincd elongated members, of a flexible' surfacing strip secured to the bottoms of said members, and

longitudinally reciprocating said strips, the

alternate strips being moved in opposite directions.

20. In a paving apparatus, the combination with a plura'lity of elongated, fiexible surfacing strips, arranged to form a continuous surface, the strips being curved from end to end to crown said surface, of means for adjusting the strips to vary the curvatre of said surface.

21; Tn a paving apparatus, the combination with two elongated members, substantially alined, of an adjusting screw connecting said members, permitting the same tobe arranged in various angular relations, and a flexible surfacingstrip Secured to the bottoms of said. members.

22. In a paving apparatus, the combinetion with two rigid elongated members substantially alincd and each free to tilt about a transverse axis intermediate of its ends, of a flexible surfacing strip Secured to the-bottoms of said members, and an ad:

24%. In a paving apparatus, the combinetion with two rigid elongated members, substantially alined, and each free to tilt about a transverse axis intermediate of its ends, of a flexible surfacing strip secured to the bottoms of said members, and an adjust-able connection between the ends of the members, allowing various angular relations to exist between them, the ends of the members ben free to move to a limited extent in relaton to the adjacent portions of 'the strips. V

25. In a paving apparatus, the combination' with two ri d elongated members, substantially alineci and slightly adjustable in various angular relations, each member being intermediately slotted, a shaft extending horizontally through each of said Slots, a roller mounted within each slot upon the correlated shaft, a frame in which the shaft extremities are mounted, means carried by the frame for reciprocating the two members in unison, and a surfacing strip secured to the bottoms of the two members.

26. In a paving apparatus, the combination with a plurality of elongated members arranged side by side, of surfacing strips Secured to the bottoms of said members and forming a sbstantially continuous surface, spacers interposed between the members, and means for reciprocating the members, the alternate members being shited in opposite directions. i

'27. In a paving apparatus, the combination with a plurality of elongated members,

arraned side by side, and intermediately slotte of surfaci-ng strips Secured to said members formng a contnuous surface, a

fpaving apparatus, a frame, a plurahty o elongated parallel surfacing' -members, adjustable vertically relative to -the frame, means for adjusting said members to vary the crown thereof, and means carried by the frame for reciprocating the members.

29. In a paving apparatus, the combination with supporting wheels arranged at oppositeends thereof, of a surfacing secton extending between the wheels, a motor m'ounted upon the frame, drums. a drive connection between the 'drums and the motor, and cables' engaging the drums and adapted to extend to anchors forwardl of the machine, for the purpose describedi 30. In a paving apparatus, the combinetion with a surfacing section adapted to .extend from side to side of the roadway,

wheels arranged at the sides of the roadway and carrying said surfacing section, a motor arranged adjacent one end of the surfacing section, and means for efl'ecting a movement of the surfacinz section driven from said motor.

In testimny whereof I aflix mv signature in presence of two witnesses.

ROBERT D. BAKER. witnesses:

WM. J.-BELKNAP, James P. BAm. 

